33552025021 has 2 divisors, whose sum is σ = 33552025022. Its totient is φ = 33552025020.

The previous prime is 33552025009. The next prime is 33552025051. The reversal of 33552025021 is 12052025533.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30272172121 + 3279852900 = 173989^2 + 57270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33552025021 is a prime.

It is a super-2 number, since 2×33552025021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33552025051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16776012510 + 16776012511.

It is an arithmetic number, because the mean of its divisors is an integer number (16776012511).

Almost surely, 2^33552025021 is an apocalyptic number.

It is an amenable number.

33552025021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33552025021 is an equidigital number, since it uses as much as digits as its factorization.

33552025021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 28.

The spelling of 33552025021 in words is "thirty-three billion, five hundred fifty-two million, twenty-five thousand, twenty-one".